%I #7 Jun 22 2022 12:09:33
%S 1,1,2,1,2,6,12,3,10,2,4,14,28,100,360,45,90,330,23100,2310,8580,780,
%T 1560,5850,468,1764,6664,476,52360,198968,397936,24871,94962,363090,
%U 20748,79534,159068,8372,32200,123970,247940,956340,1912680,7389900,28574280,1242360
%N a(n) = gcd(Catalan(n), n!).
%t Table[GCD[CatalanNumber[n],n!],{n,0,50}] (* _Harvey P. Dale_, Jun 22 2022 *)
%Y Cf. A000108.
%K nonn
%O 0,3
%A _N. J. A. Sloane_, Dec 28 2009